著者

小松 光昭 村田 雅人 木暮 信一

出版者

一般社団法人 レーザー学会

雑誌

レーザー研究 (ISSN:03870200)

巻号頁・発行日

vol.40, no.4, pp.285, 2012 (Released:2020-07-16)

参考文献数

17

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This study clarifies the effect of low-power laser irradiation (LLI) on the muscle contraction of frog gastrocnemius and provides further insights into the possibility of clinical applications at the mammal level. When we used continuous wave LLI on the muscle contraction of frog gastrocnemius, the retardation of tension attenuation was obtained by near-infrared LLI (808 nm, 100 mW). However, we could not determine whether such retardation was based on the thermal or the photochemical effect of LLI. Since a pulsed laser has the potential to discriminate such effects, we conducted the present experiments. As a result, the pulsed LLI induced neither temperature increments nor retarded muscle fatigue. Although a thermal effect on the retardation of muscle fatigue cannot be excluded, we conclude that the photochemical action is dominant if the optical absorption and the temperature change of living tissue are considered.

著者

村田 雅人 向井 喜彦 田口 佳男 堀田 昌直

出版者

社団法人溶接学会

雑誌

溶接学会論文集 : quarterly journal of the Japan Welding Society (ISSN:02884771)

巻号頁・発行日

vol.9, no.3, pp.134-139, 1991-08-05

被引用文献数

7

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Intensity of secondary electron induced by incident electron beam depends on a degree of inclination of surface. In the present work, 3-dimensional image for fracture surface was tried to constitute by applying this secondary elecron property with improved type SEM equipment which had four secondary electron detectors to remove a image distortion caused by observating direction. As the results, we could obtain 3-dimensional image and measured direction depth of fracture surfaces by real time treatment with 32 bit personal computer. In the case, the calculation time for one fractograph analysis was about only 5 minutes.